Cost of Trans−Atlantic Travel A Boeing 747 crosses the Atlantic Ocean (3000 miles) with an...

Cost of Trans−Atlantic Travel A Boeing 747 crosses the Atlantic Ocean (3000 miles) with an airspeed of 500 miles per hour. The cost C (in dollars) per passenger is given by

where x is the ground speed (airspeed ± wind).

(a) Use a graphing utility to graph the function C = C(x).

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(b) Create a TABLE with TblStart = 0 and ΔTbl = 50.

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(c) To the nearest 50 miles per hour, what ground speed minimizes the cost per passenger?